Available to hire
Hi, I’m Barna Girás, a performance-driven senior backend engineer and solutions architect with 8+ years of experience building high-concurrency distributed systems. I specialize in creating robust services using C# (.NET 10), Go, and Python, with a proven track record in Cloud-Native Infrastructure (GCP/Azure), microservices migrations, and project management.
I’m currently architecting AI-powered backend ecosystems and real-time IoT data processing pipelines, focused on scalable multi-tenant cloud deployments, AI-assisted cataloging, inventory management, and secure access control.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
German
Advanced
Romanian, Moldavian, Moldovan
Intermediate
Danish
Beginner
Work Experience
Founder & Lead .NET Architect at BG Solutions
October 1, 2025 - PresentArchitecting a 'Library OS' ecosystem utilizing bleeding-edge Microsoft technologies. Design core backend services with .NET 10, leverage Core CLR performance improvements. Develop a robust C# service layer interfacing with RFID IoT hardware, ensuring thread-safe processing of concurrent tag events. Build high-frequency real-time event streams with gRPC and C# Channels to synchronize state between central server and self-service kiosks. Implement optimized data access with Entity Framework Core and LINQ for complex book-circulation datasets.
Senior Full-Stack Developer at Nexbib, Copenhagen
June 1, 2024 - PresentDriving modernization of enterprise library software. Migrated legacy Windows .NET Framework monoliths to containerized ASP.NET Core microservices. Replaced polling with SignalR for two-way real-time client/server communication. Standardized internal communications with RESTful APIs and improved maintainability and error handling.
Software Developer at Accenture DAC H, Germany
September 1, 2021 - May 1, 2024Data engineering: built high-performance C# / SQL data processing pipelines; Cloud integration with on-prem apps using Azure DevOps pipelines; Implemented unit testing standards (xUnit / Moq) to increase coverage on critical supply-chain logic.
Software Developer at Hussein, Germany
August 1, 2018 - July 1, 2021Full lifecycle development: PLM system from scratch using ASP.NET Core and Angular; Backend business logic for product configuration and versioning; Database design in MS SQL Server with EF Core Code-First migrations.
Senior Full-Stack Developer at Nexbib
June 1, 2024 - PresentDrove modernization of enterprise library software, designed core backend services with .NET 10 and microservices, and enabled cloud‑native deployments. Built high‑performance real‑time communication pipelines using gRPC, SignalR and RESTful APIs; collaborated with frontend teams using Angular/TypeScript.
Software Developer at Accenture DA CH, Germany
September 1, 2021 - May 1, 2024Implemented backend services in ASP.NET Core, contributed to data processing pipelines, and led performance optimizations and migrations from legacy systems to modern microservices.
Software Developer at Hard- und Software Hussein, Germany
August 1, 2018 - July 1, 2021Full lifecycle development for embedded and client–server applications; implemented RFID hardware interfacing, real‑time server synchronization via gRPC, and built cross‑platform frontend integrations with Angular/TypeScript.
Founder & Lead Backend Architect at BG Solutions
October 1, 2025 - PresentLeading the technical delivery of Library OS, a distributed IoT and AI-driven management platform. Designed a hybrid backend mesh using Go for real-time IoT event ingestion and .NET for core business logic and hardware orchestration.
Senior Backend Developer at Nexbib, Copenhagen
June 1, 2024 - PresentOrchestrating the transition of legacy library systems to cloud-native microservices. Legacy migration from .NET Framework monoliths to containerized ASP.NET Core microservices deployed on GKE and Azure. Real-time data flow and architecture optimization across the stack.
Senior Backend & Data Engineer / Delivery Lead at Accent DAC H, Germany
September 1, 2021 - May 31, 2024Data Platform Engineering: Built scalable data processing engines on Azure, optimizing C# functions and T-SQL procedures for multi-terabyte public sector data sets. Project management: Delivered as Delivery Lead (JD-L Certified), managing sprint backlogs, cross-team dependencies, and maintaining high code-quality standards. DevOps integration: Automated deployment workflows using Azure DevOps, reducing release cycles by ~30%.
Freelance Lead Backend Architect at B.G. Solutions
October 1, 2025 - PresentArchitecting and delivering a comprehensive modular digital services ecosystem for public libraries — a multi-service platform spanning IoT hardware orchestration, AI-assisted cataloging, inventory management, access control, and patron-facing applications, designed for multi-tenant cloud deployment.
Senior Backend Developer at Nexbib
June 1, 2024 - April 1, 2026Legacy NET Framework monoliths; implemented new features and modernized architectural plans. Proposed comprehensive upgrades to modernize legacy systems using .NET 10 and newer tech. Managed service-to-service communications and external integrations via WebSockets, SOAP, and REST protocols.
Backend & Data Engineer at Accenture DAC H
September 1, 2021 - May 1, 2024Data platform engineering on Azure; optimized C# functions and T-SQL procedures for multi-tenant data pipelines. Project coordination as a Junior Delivery Lead (JD L), agile process support, cross-team dependency management, and implementing CI/CD via Azure DevOps.
Software Developer at Hardware und Software Hussein
August 1, 2018 - July 1, 2021API design for an enterprise PLM system using ASP.NET Core; normalized SQL schemas and EF Core migrations for complex data relationships; full-stack collaboration with Angular/TypeScript frontend and backend state management.
Freelance Lead Backend Architect at BG Solutions
October 1, 2025 - PresentArchitecting and delivering a comprehensive modular digital services ecosystem for public libraries — a multi-service platform spanning IoT hardware orchestration, AI-assisted cataloging, inventory management, access control, and patron-facing applications, designed for multi-tenant cloud deployments.
Software Developer at Hardware Hussein
August 1, 2018 - July 1, 2021API design: developed core RESTful API for an enterprise Product Lifecycle Management (PLM) system using ASP.NET Core. Database architecture: designed normalized SQL schemas and optimized EF Core migrations for high-complexity data relationships. Full-stack synergy: collaborated on Angular/TypeScript front-end to ensure seamless integration with the backend state machine.
Backend & Data Engineer at Accenture DACH
September 1, 2021 - May 31, 2024Data Platform Engineering: Built scalable data processing engines on Azure, optimizing C# functions and T-SQL procedures for multi-terabyte public-sector data sets. Project Coordination: Achieved Junior Delivery Lead (JDL) certification, assisting in agile processes, managing sprint backlogs, coordinating cross-team dependencies, and maintaining high code quality standards. DevOps Integration: Automated deployment workflows for backend services using Azure DevOps.
Software Developer at Hard- und Software Hussein
August 1, 2018 - July 31, 2021API Design: Core RESTful API for an enterprise Product Lifecycle Management (PLM) system using ASP.NET Core. Database Architecture: Normalized SQL schemas and optimized EF Core migrations for highly complex data relationships. Full-stack Synergy: Collaborated on the Angular/TypeScript frontend to ensure seamless integration with the backend state machine.
Education
Certified IT Specialist (Application Developer) at Vocational School 1, Germany
January 1, 2018 - January 1, 2021High School Diploma (Computer Science) at Bathory Istvan, Romania
January 1, 2011 - January 1, 2015Certified IT Specialist – Application Developer at Vocational School 1, Germany
January 1, 2018 - December 31, 2021High School Diploma (Computer Science) at Báthory István, Romania
January 1, 2011 - December 31, 2015Bachelor of Science in AI & Sustainable Technologies at Tomorrow University
January 1, 2026 - March 13, 2026Certified IT Specialist: Application Developer at Vocational School 1, Germany
January 1, 2018 - December 31, 2021High School Diploma (Computer Science) at Báthory István, Romania
January 1, 2011 - December 31, 2015BSc AI & Sustainable Technologies at Tomorrow University
January 1, 2026 - January 1, 2029Certified IT Specialist: Application Developer at Vocational School 1, Germany
January 1, 2018 - January 1, 2021High School Diploma (Computer Science) at Báthory István, Romania
January 1, 2011 - January 1, 2015BSc AI & Sustainable Technologies at Tomorrow University
January 1, 2026 - January 1, 2029Certificate IT Specialist: Application Developer at Vocational School 1, Germany
January 1, 2018 - January 1, 2021High School Diploma (Computer Science) at Báthory István, Romania
January 1, 2011 - January 1, 2015BSc AI & Sustainable Technologies at Tomorrow University
January 1, 2026 - December 31, 2029IT Specialist Certification: Application Developer at Vocational School 1, Germany
January 1, 2018 - December 31, 2021High School Diploma (Computer Science) at Báthory István, Romania
January 1, 2011 - December 31, 2015Qualifications
Azure Fundamentals (Microsoft Certified)
April 1, 2023 - February 20, 2026Certified Cloud Digital Leader
November 1, 2022 - November 1, 2025Generative AI Leader
December 1, 2025 - December 1, 2028Associate Cloud Engineer
January 11, 2030 - February 20, 2026Microsoft Certified: Azure Fundamentals
April 1, 2023 - February 20, 2026Google Cloud Digital Leader
November 1, 2022 - December 1, 2025Generative AI Leader
December 1, 2025 - December 1, 2028Associate Cloud Engineer
January 11, 2030 - February 20, 2026Generative AI Leader
December 1, 2025 - December 1, 2028JD-L Delivery Lead
July 1, 2023 - March 13, 2026Microsoft Certified: Azure Fundamentals
April 1, 2023 - March 13, 2026Certified Cloud Digital Leader
November 1, 2022 - November 1, 2025Junior Delivery Lead
July 1, 2023 - April 20, 2026Microsoft Certified: Azure Fundamentals
April 1, 2023 - April 20, 2026Certified Cloud Digital Leader
November 1, 2022 - April 20, 2026Generative AI Leader
December 1, 2025 - April 20, 2026Generative AI Leader
December 1, 2025 - December 1, 2028Junior Delivery Lead
July 1, 2023 - April 20, 2026Microsoft Certified: Azure Fundamentals
April 1, 2023 - April 20, 2026Certified Cloud Digital Leader
November 1, 2022 - January 1, 2025Junior Delivery Lead (JDL)
July 1, 2023 - April 20, 2026Microsoft Certified: Azure Fundamentals
April 1, 2023 - April 20, 2026Certified Cloud Digital Leader
November 1, 2022 - November 1, 2025Generative AI Leader
December 1, 2025 - December 1, 2028Industry Experience
Software & Internet, Computers & Electronics, Government, Professional Services, Media & Entertainment, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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